One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(11,15)(14,16)(17,18)(19,23)(20,24)(21,22)(25,26,28,30)(27,31,32,29)(1,2,6,5)(3,8,4,7)(10,13)(14,16)(17,19,22,20)(18,23,21,24)(1,3,6,4)(2,7,5,8)(9,10)(11,14)(12,13)(15,16)(17,20,22,19)(18,23,21,24)(1,4,6,3)(2,7,5,8)(17,21,22,18)(19,23,20,24)(25,27,28,32)(26,29,30,31)(1,5,6,2)(3,8,4,7)(9,11)(10,14)(12,15)(13,16)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.